/* -------------------------------------------------------------------------
 *
 *	  JOHAB <--> UTF8
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * IDENTIFICATION
 *	  src/backend/utils/mb/conversion_procs/utf8_and_johab/utf8_and_johab.c
 *
 * -------------------------------------------------------------------------
 */

#include "postgres.h"
#include "knl/knl_variable.h"
#include "fmgr.h"
#include "mb/pg_wchar.h"
#include "../../Unicode/johab_to_utf8.map"
#include "../../Unicode/utf8_to_johab.map"

PG_MODULE_MAGIC;

PG_FUNCTION_INFO_V1(johab_to_utf8);
PG_FUNCTION_INFO_V1(utf8_to_johab);

extern "C" Datum johab_to_utf8(PG_FUNCTION_ARGS);
extern "C" Datum utf8_to_johab(PG_FUNCTION_ARGS);

/* ----------
 * conv_proc(
 * INTEGER, -- source encoding id
 * INTEGER, -- destination encoding id
 * CSTRING, -- source string (null terminated C string)
 * CSTRING, -- destination string (null terminated C string)
 * INTEGER -- source string length
 * ) returns VOID;
 * ----------
 */
Datum johab_to_utf8(PG_FUNCTION_ARGS)
{
    unsigned char* src = (unsigned char*)PG_GETARG_CSTRING(2);
    unsigned char* dest = (unsigned char*)PG_GETARG_CSTRING(3);
    int len = PG_GETARG_INT32(4);

    CHECK_ENCODING_CONVERSION_ARGS(PG_JOHAB, PG_UTF8);

    LocalToUtf(src, len, dest, LUmapJOHAB, lengthof(LUmapJOHAB), NULL, 0, NULL, PG_JOHAB);

    PG_RETURN_VOID();
}

Datum utf8_to_johab(PG_FUNCTION_ARGS)
{
    unsigned char* src = (unsigned char*)PG_GETARG_CSTRING(2);
    unsigned char* dest = (unsigned char*)PG_GETARG_CSTRING(3);
    int len = PG_GETARG_INT32(4);

    CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_JOHAB);

    UtfToLocal(src, len, dest, ULmapJOHAB, lengthof(ULmapJOHAB), NULL, 0, NULL, PG_JOHAB);

    PG_RETURN_VOID();
}
